Click the "Select File" button above, and choose your GNO file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert GNO to another file type
To convert GNO Genograms to another format, you need GenoPro or other Data software.
Convert a file to GNO
To convert other file formats to the "Genogram Document" file type, you need software like GenoPro or a similar tool.
About GNO files
The .GNO file extension is primarily associated with Genogram family tree documents created by GenoPro. A genogram is a complex visual representation of a family tree that includes detailed data on relationships, medical history, and emotional bonds between individuals. The major disadvantage of the .GNO format is its proprietary nature. Users without a paid GenoPro license or a dedicated viewer cannot open or edit the file, which makes sharing these documents with relatives or genealogists using different software highly restrictive. To ensure broad accessibility, you should convert .GNO files to standard formats. Exporting to .GED (GEDCOM) is crucial for importing genealogical data into other standard family tree software, though some specialized genogram visual layouts may be lost. For visual sharing and printing, converting to .PDF or .JPG is the most practical choice. Extracting the internal data to .XML is also a viable option for developers. Standard online converters fail with .GNO files because the format relies on proprietary encoding. Modern .GNO files act as compressed ZIP archives containing XML data and images, while older versions use Microsoft Compound File Binary formats. Because it is a closed format, often only the original software can properly read or export the structured data. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your GNO file, detects the exact format, and lets you read the text inside.
If you want to convert GNO file to PDF, CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT or DB, you can use GenoPro or similar software from the "Genogram Family Tree Storage" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to GNO, try GenoPro or another comparable tool in the "Genogram Family Tree Storage" category.
The GNO Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our GNO converter.